Selvage-loop-trimming machine



March 9 1926.

F. C. WHITTIER sELvAGE LooP TRIMMING MACHINE Filed March 2, 1923 2 Sheets-Sheet 1 rig. 3. d

INf/ENToR.

W4 T'TORNEY March 9 1926.y 1,576,476

F. c. WHITTIER SELVAGE LOOP TRIMMING MACHINE Filed March 2, 1925 2 Sheets-Sheet 2 PatentedMar. 9, 1.926.

1,576,416 @P TENT ori-ica EEED'C. wHITTIEn, or LowELL, MASSACHUSETTS, AsSreNoE To MASSACHUSETTS COTTON-MILLS, or LOWELL, MASSACHUSETTS, A CORPORATION or' MASSACHU- SETTS.

SLVAGE-LOOB-TRIMMING- MACHINE.'

*Application filed march a, '1923. serial No. 622,424.

.To all/whom z't may concern: i

Be it known that I, FRED C. WHITTIER, a citizen of the United States, residing at\ Lowell, in the county of Middlesex and c State of Massachusetts, have invented certain new and useful Improvements in Selvage- Loop-Trimming Machines, of whichthe following is a specification. 4 In the manufacture of certain kinds of l@ cloth, particularly on what are'known asV i box looms where the shuttles are .changed in order to produce patterns, etc., loops formed of filling yarn are left on the selvage edge which is nearest the box. It is desirable to Y M have these loops cut olf in the finished goods.

In other kinds of cloth and on the other v edge of such cloth woven onl box looms, there are also tails or short pieces of filling left. It is also desirable to cut off these. 20 This cutting has generally been done by hand, and my'machine is intended to take the place of such hand work.

`The loops or tails must be clipped close to the selvage edge, but the selvage edge must. E@ not be cut. v

In the drawings, Figure 1 is a plan View of the preferred form of my device acting on. a blanket.

Fig. 2 is an elevation from preferred form of clippers.

Fig. 3 is an elevation from the left of line y 3 3 0f Fig. l.

F ig is a diagram from the bottom of my preferred form of Clippers and guard acting on a blanket. A

Fig. 5 is a sectional diagram in elevation of a modification.

Fig. 6 is a plan and Fig. 7 is a sectional elevation of another modification. v

Fig. 8 is a-detail of one of the guides.

Fig. 9 is a plan view of another modification.

I lin the drawings, A represents a table on which is a cut of cloth, such as a blanket B Y' shown as having bars 10, 11, 12, 13, 14 running from the selvage edge 7 8 laterally.

As a result f being woven on a box loom or for any other reason, in making a pattern, loops such as 20, 21, 22, 23, are left on the selvage edge 7 8 as shown.

rllhe selvage edge 7 8 of the cloth is passed under and along suitable guides, to

be described, across an opening or recess R in table A.

the back of my 3 As shown, thefrst of these guides has what 1s known as a scrimp bar 30, which is \an angularly bent strip of spring metal of L l shape fastened at one end to table' A and eX- tending down flat on thef surface 6 of the table so that its edge will straighten'out any rolling of the selvage edge 7 8, flattening it out so that when it passes along over a plate flat on the surface of the table and under the flat plate guide 33 carried by the spring arm 31 fastened at its other end to the table, there will be no curl. The selvage edge also passes along and is guided along by the edge 'guide 32 at the same time that it passes under the surface guide 33. A

By edge guide 32 and the wire guide 34, the selvage edge of the cloth is guided across recess R proximate the clippers C.

Preferably, it also passes over a surface plate 3G attached to the top of the table and under another smoothing-*out guide 35 which consists of a spring arm fastened to the table and extending down and over on top of the cloth.

As shown, the table 'has a supporting board A1 ashort distance inside of itsedge of usual construction, and to this, by means of bolts 2, 2, isiixed a block 3 which supports a stand F of angular form attached to block 3 by lag-screws 50. The vertical arm 51 of stand F has a vertical slot 52 through which passes a bolt 53 by which is adjustably attached a supporting arm 55 for clipper C which, preferably, has a plurality of cutting teeth 40 and 41. Y

Preferably, by means of springs 45, bolts 43 and wing nuts 414, the tension between the two sets of cutting teeth of the clippers can be regulated, all in a well known manner.

These are preferably power clippers driven by means of a iexible shaft K from any suitable source of power.

rFliese clippers are vertically arranged so that the ends of teeth 41 will be vclose to but not quite touching the selvage edge 7 8 of cloth B as it is drawn along past the surface guides and the edge guides described above.

fn order to be sure that the cloth does not get between the teeth of the clippers, lf fasten a clipper guide 42 shown in F ig. 2 as consisting of a wire 42 in such position on the back of the teeth 41 that it prevents the selvge edge from getting in between the teet l liti llt is obvious that it the cloth is drawn along while the clippers are in motion, they will clip anything which projects from the selvage edge but will Vnot clip the selvage itself.

For the purpose ot forcing outward towards the clippers the loops such as 20, 21, 22, 23, l: prefer to use diagonally disposed blow pipes G and H, one above and the other below the table, so arranged that t-he jets Jrom their nozzles 60 and 61 will converge at the edge of the selvage. The blasts of air will merge at the selvage and will carry with them the loops so that they will stand out and, as the cloth passes the clippers, they will be clipped oit. y

The cloth support may be a wooden table, such as A, with a recess R as shown in lTigs. 1 and 3 or, as shown in Fig. 5, it may be a metal table 1GO with a recess 161. Any suit-able selvage guides, not shoun, may be uscdto direct the selvage edge along a line proximate means for cutting selvage loops such as a single toothed cutter` 62. lfleans above and below the level ofthe surface of the table, and therefore of the cloth B, to direct a current of air from the alinement et the selvage edge of the cloth towards the cutting means, are shown as the two blowl pipes 63 and 641. disposed nearly parallel to each other and to the table.

As shown in Figs. 6 and 7, 1 may use a metal table 70 with no recess but with the selvage guides 71 and 72 level with the edge 7 3 of the table. Shears 74 supported by an arm 75 may be used instead of clippers, and electric fans 76 and 77 supported by arms 75 and 79 may be used to supply air currents converging near the selvage edge to blow out theloops. These fans 7 6 and 77, in addition to their direct currents, induce currents of air along the top of the cloth, between it and the table, and also under the table. All of these converging or merging currents tend to force the loops into the cutter.

As shown in Fig. 8, l iind it desirable to force up the selvage edge 7 8 against an edge guide 37 so that it curls before it reaches the edge guides 32 and 33 which causes it to run straight and ilat past the clippers C.

l prefer to use clippers with a plurality of teeth because, as one set becomes dull, the clippers can be raised and lowered whereby sharp cutting teeth will always be in action.

It is obvious that hand clippers or shears might be used instead of power clippers.

As shown in Fig. 9, instead of converging currents of air, or a brush, ll may use a vacuum or suction tube 100, with a iat mouth 101 disposed close to the line of selvage and selvage guides, to suck out the loops.

atraer/e The cutting means which may be a rapidly revolving saw disc 102 may enter slightly in :front of this mouth so that as the loops are cut od', they will be carried away through tube 100,a

Mouth 101 induces a curr-ent ot air above the cloth and a current between it and the table, and also a current :trom under the table. 1t table 70 is made of thin netal this current with the others, converge at the point on the edge of the cloth, close to the cutter and cause the loops to stand out as they pass, whereby they are cut evenly.

I claim:

l. ln a machine for trimming selvage loops from cloth, the combination of a table, a recess therein, guides to keep the selvage edge :tlat on the table, selvage guides so alined as to direct the selvage edge in a straight line across said recess, a power clipper having many cutting teeth set at right angles to said line with the cutting point ot its teeth proximate said line at said recess, a protector guide attached to said teeth ben tween them and said line, means to so ad! just the clipper as to bring different teeth in cutting relation to said line, power means to drive the clippers, and means above and below the level of the surface of the table to so direct two currents of air as to converge at said line proximate the clipper and merge and continuepast the clipper so as t-o force the loops away from the selvage edge until they are cut.

2. In a machine for trimming selvage loops from cloth, the combination of a table, a. recess therein, selvage guides so alined as to dircet the selvage edge in a straight line across said recess, va power clipper having many cutting teeth set at right angles to said line with the cutting point of its teeth proximate said line at said recess, a protector guide attached to said teeth between them and said line, means to so adjust the clipper as to bring dierent teeth inv cutting relation to said line, power means to drive the clippers, and means above and below the level of the surface of the table to so direct two currents of air as to converge at said line proximate the clipper and merge and continue past the clipper.

/ 3. ln a machine for trimming selvage loops from cloth, the combination of a table, guides to keep the cloth fiat on the surface ot the table, selvage guides so alined as to direct the selvage edge in a straight line, a power clipper with its cutting members proximate said line, a protector guide between the clipper and said line, power means to drive the clippers, and means above and below the level of the surface of the table to direct a current of air from said alinement towards i said clipper.

4l. ln a machine for trimming selvage loops from cloth, the combination of a table,

selvage guides so alined as to direct the selvage edge in a straight line and to be unsupported proximate a clipper, and said clipper with its cutting members proximate said line, power means to drive the clippers, and means above and below the level' of the surface of the table to direct a current of air from back of said alinement towards said clipper.

5. In a machine for trimming selvage loops from cloth, the combination of a cloth support and suitable selvage guides whereby the selvage edge can be directed along a line proximate means for cutting such selvage loops, said means for cutting, and means positioned proximate said means for cutting to direct currents of air from above and below towards said line whereby such loops will be blown away from the sglvage edge until they are cut.

6. In a machine for trimming selvage loops from cloth, the combination of a cloth support and suitable selvage guides whereby the selvage edge can be directed and be unsupported along a line proximate means for cutting such selvage loops, said means for cutting, and means positioned proximate said means for cutting to direct jets of air from above and below on the cloth back of said line, whereby such loops will be forced away from the selvage edge until .they are cut by said means for cutting.

7. In a machine for trimming selvage loops from cloth, the combination of a cloth support and suitable selvage guides whereby the selvage edge can be directed and be unsupported at a given point proximate means for cutting such selvage loops, said means for cutting, and meanspositioned above and below the cloth to direct jets of air from above and below so as to converge on the cloth and continue towards said point whereby such loops will be blown away from the selvage edge until theyr are cut by the means for cutting.

8.; The process or method of removing loops from the selvag'e edge of cloth, which consists of continuously passing the edge unsupported past a given point and of directingon the cloth back of said point converging jets of air which continue past said point, carrying with them the loops, and parting said loops past but proximate said point.

9. In a machine for trimming selvage loops from cloth, the combination of a table, a recess-therein, means for cutting the selvage loops positioned with its cutting edge in said recess, `selvage guides so alined as to direct the selvage edge of cloth in a straight line across said recess, close to but not touching said cutting edge, and means positioned above and below the table to direct jets of airL so as to converge on the edge of said cloth, whereby selvage loops will be blown away fromthe selvage edge until they are cut bythe means for cutting.

FRED c. wH'rr'rIER. 

